Potassium Carbonate → 3-Ethyl-4-(4-isopropoxyphenoxy)-1-(3,3-dibromo-2-propenyloxy)benzene

HRID 1940237ノート

反応式

HRID 1940237 の反応式
[CH2:1]([C:3]1[CH:4]=[C:5]([OH:20])[CH:6]=[CH:7][C:8]=1[O:9][C:10]1[CH:15]=[CH:14][C:13]([O:16][CH:17]([CH3:19])[CH3:18])=[CH:12][CH:11]=1)[CH3:2].C(=O)([O-])[O-].[K+].[K+].[Br:27][C:28]([Br:32])=[CH:29][CH2:30]Br>CN(C)C=O>[CH2:1]([C:3]1[CH:4]=[C:5]([O:20][CH2:30][CH:29]=[C:28]([Br:32])[Br:27])[CH:6]=[CH:7][C:8]=1[O:9][C:10]1[CH:15]=[CH:14][C:13]([O:16][CH:17]([CH3:19])[CH3:18])=[CH:12][CH:11]=1)[CH3:2]

参加物

5

反応物 3

HCID 11430Potassium CarbonateHCID 130414871,1,3-Tribromoprop-1-eneHCID 214662313-Ethyl-4-(4-isopropoxyphenoxy)phenol

生成物 1

HCID 214663373-Ethyl-4-(4-isopropoxyphenoxy)-1-(3,3-dibromo-2-propenyloxy)benzene収率 71.3%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒2 回

実験手順

To a mixture of 0.65 g of 3-ethyl-4-(4-isopropoxyphenoxy)phenol, 0.35 g of potassium carbonate and 10 ml of N,N-dimethylformamide, a solution prepared by dissolving 0.73 g of 1,1,3-tribromo-1-propene in 5 ml of N,N-dimethylformamide was added dropwise at room temperature with stirring. After stirring at room temperature for 12 hours, the reaction solution was poured into ice-water, and extracted twice with 50 ml of diethyl ether. Then, the ether layers were combined, washed with water, dried over anhydrous magnesium sulfate and then concentrated to give a crude product. This crude product was subjected to silica gel chromatography to give 0.80 g of 3-ethyl-4-(4-isopropoxyphenoxy)-1-(3,3-dibromo-2-propenyloxy)benzene, yield 71%: nD23.0 1.5761.

後処理

  1. customa solution prepared
  2. additionwas added dropwise at room temperature
  3. stirringAfter stirring at room temperature for 12 hours
  4. extractionextracted twice with 50 ml of diethyl ether
  5. washwashed with water
  6. dry with materialdried over anhydrous magnesium sulfate
  7. concentrationconcentrated
  8. customto give a crude product

出典と根拠

ORDレコード
ord-5bb4de2d29634bb89eb383250280a618
出典データセット
uspto-grants-1997_12
特許番号
US05698702

反応ノート

読み込み中…